/Engine/Source/Runtime/Slate/Public/Widgets/Text/SlateEditableTextLayout.h
Select the word under the given position
void SelectWordAt ( const [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) & MyGeometry, const [UE::Slate::FDeprecateVector2DParameter](API\Runtime\SlateCore\Types\FDeprecateVector2DParameter) & ScreenSpacePosition )